LG 22LV2500 Service Manual page 35

GP2R_GLOBAL_TUNER_BLOCK for Small Model
CN_2INPUT_H_LG3911
TU3701
TU3702
TDTJ-S001D TDFR-C036D
DVB_1INPUT_H_LGIT
ANT_PWR[OPT]
1 1
BST_CNTL
2 2
+B
3 3
NC[RF_AGC]
4 4
AS
5 5
SCL
6 6
SDA
7 7
NC[IF_TP]
8 8
SIF
9 9
NC
10 10
VIDEO
11 11
GND
12 12
1.2V
13 13
3.3V
14 14
RESET
15 15
IF_AGC_CNTL
16 16
DIF_1
17 17
DIF_2
18 18
19
19
20
SHIELD
21
22
23
24
25
TUNER MULTI-OPTION 26
27
TU3702-*3
28
UDA55AL
29
RF_S/W_CTL
1
NC_1
1
BST_CTL
2 NC_2
2
+B1[5V]
3 30
+B[+5V]
NC_1[RF_AGC] 3
31
4 NC[RF_AGC]
4
NC_2
5
AS
SCLT 5
6
SCL
6
SDAT
7 SDA
7
NC_3
8
NC(IF_TP)
SIF 8
SHIELD
9 SIF
9
NC_4
10 NC_3
VIDEO 10
11
VIDEO
11
GND
12 GND
12
+B2[1.2V]
13
+1.2V
+B3[3.3V] 13
14
+3.3V
14
RESET
15 RESET
IF/AGC 15
16
IF_AGC_CNTL
16
DIF_1[N]
17 DIF_1
17
D I F _ 2 [ P ]
18
DIF_2
18
19
19
SHIELD
SHIELD
TU3702-*2
TDTR-T036F
TU3702-*1
TDVJ-H101F
TU3702-*4
TDTJ-S101D
ANT_PWR[OPT]
1
ANT_PWR
BST_CNTL 1
2
NC_1
+B 2
3
NC[RF_AGC] +B1[5V]
4 3
RF_AGC
AS 4
5
SCL MOPLL_AS
6 5
SDA SCL
6
7
SDA
NC(IF_TP) 7
8
SIF NC_2
9 8
SIF
NC 9
10
VIDEO NC_3
11 10
GND VIDEO
11
12
GND
1.2V 12
13
3.3V +B2[1.2V]
14 13
+B3[3.3V]
RESET 14
15
RESET
IF_AGC_CNTL
16 15
DIF_1 IF_AGC
16
17
DIF_1[N]
DIF_2 17
18
D I F _ 2 [ P ]
18
19
19
SHIELD
SHIELD
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
RF_SWITCH_CTL
P u l l - u p c a n ' t b e a p p l i e d
because of MODEL_OPT_2
close to TUNER
OPT
R3762 0
CONTROL_ATTEN
close to TUNER
+5V_TU
RF_S/W_CNTL
C3701
C3728
BST_CNTL
0 . 1 u F
0 . 1 u F
C3703
16V
16V
100pF
OPT
+B1[+5V] 50V
NC[RF_AGC] 2SC3052
R3707 0
OPT
NC_1
C3706
0 . 1 u F
SCLT
16V
SDAT
NC_2
SIF
close to TUNER
NC_3
+3.3V_TU
VIDEO
+1.2V/+1.8V_TU C3708
GND CN C3707
0 . 1 u F
100pF
C3739
16V
50V
10uF
+B2[1.2V] FULL_NIM 6.3V
C3737 C3738 C3705
100pF 0 . 1 u F 100uF
+B3[3.3V] 16V
50V 16V
c l o s e t o t h e t u n e r p i n , a d d , 0 9 0 2 9
RESET
NC_4
SCL
SDA
R3701 100
c l o s e t o I F l i n e
FULL_NIM
ERR
SYNC
HALF_NIM
R3760 0
VALID
MCL
R3761 0
D0 HALF_NIM
D1
D2
C l o s e t o t h e t u n e r
D3
D4
D5
D6
D7
FULL_NIM_CHINA
FULL_NIM
FULL_NIM
FULL_NIM_CHINA R3723
FULL_NIM_BR R3706
G P I O m u s t b e a d d e d .
OPTION : RF AGC
C3731
10uF
10V
OPT
TU_IIC_NON_ATSC_SANYO
C
R3754
Q3704 B 10K
FE_AGC_SPEED_CTL
R3740-*1
IF_AGC_SEL
1K
OPT
OPT
E
33 R3735
TU_I2C_NON_FILTER
33 R3736
TU_I2C_NON_FILTER
TU_I2C_NON_FILTER
C3713
C3711
18pF
TU_I2C_NON_FILTER 18pF
50V
50V
TU_I2C_FILTER
C3711-*1
+3.3V_TU
20pF
50V
TU_I2C_FILTER
TU_I2C_FILTER
R3733
TU_I2C_FILTER
R3732 100K TU_I2C_FILTER
R3736-*1
100 R3735-*1
TUNER_RESET
C3710
MLG1005SR27JT MLG1005SR27JT
0 . 1 u F
16V
0
R3704
IF_AGC_MAIN
HALF_NIM
s h o u l d b e g u a r d e d b y g r o u n d
C3712
22pF
50V
FULL_NIM
IF_N_MSTAR
IF_P_MSTAR
1 . s h o u l d b e g u a r d e d b y g r o u n d
2 . N o v i a o n b o t h o f t h e m
3 . S i g n a l W i d t h > = 1 2 m i l s
S i g n a l t o S i g n a l W i d t h = 1 2 m i l s
G r o u n d W i d t h > = 2 4 m i l s
R3724
FULL_NIM 0
FE_TS_DATA[0-7]
FE_TS_SYNC
R3730
FULL_NIM 0
FE_TS_VAL_ERR
FULL_NIM R3731
0
FE_TS_CLK
R3725
0 FE_TS_DATA[0]
FULL_NIM R3727
0
FE_TS_DATA[1]
FULL_NIM_BR
TU3701-*2
FULL_NIM R3728
0 TDFR-B036F
FE_TS_DATA[2]
RF_S/W_CNTL
1
BST_CNTL
R3729 2
FULL_NIM 0 +B1[5V]
FE_TS_DATA[3] 3
NC_1[RF_AGC]
4
NC_2
5
SCLT
R3726 6
FULL_NIM
0 FE_TS_DATA[4] SDAT
7
NC_3
8
SIF
9
NC_4
R3721 10
0 FE_TS_DATA[5]
VIDEO
11
GND
12
+B2[1.2V]
13
R3722 +B3[3.3V]
0 FE_TS_DATA[6] 14
RESET
15
NC_5
16
SCL
17
0 SDA
FE_TS_DATA[7] 18
ERR
19
SYNC
20
VALID
21
MCL
22
C l o s e t o t h e C I S l o t
D0
23
D1
24
D2
25
D3
0 26
D4
27
D5
28
D6
29
30 D7
31
SHIELD
+5V_TU
BOOSTER : CHINA OPT
L3701 BOOSTER_OPT
BLM18PG121SN1D
BOOSTER_OPT
R3734 BOOSTER_OPT
R3743
0
10K
Q3701
BOOSTER_OPT
ISA1530AC1
E
R3737
2.2K
B BOOSTER_OPT
C
C R3745
BOOSTER_OPT
10K
Q3702 B
FE_BOOSTER_CTL
2SC3052
LNA2_CTL
T h e p u l l - u p / d o w n o f L N A 2 _ C T L
E
BOOSTER_OPT
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
TU_IIC_NON_ATSC_SANYO
+3.3V_TU
R3741-*1
1K
TU_IIC_ATSC_SANYO
R3741
1.2K +5V_TU
TU_SCL
TU_SDA
R3751 R3752
220
C3742 220
C3743
20pF
20pF
50V
50V
TU_I2C_FILTER
E
R3749 0
B
R3750 Q3703
1K ISA1530AC1
C3713-*1 C
OPT
20pF
50V
+3.3V_TU
R3742
R3744
4.7K 4.7K
FULL_NIM
FULL_NIM
DEMOD_SCL
C3714
22pF
50V
FULL_NIM
+3.3V_TU
HALF_NIM_1.2V_DIODES
P l e a s e , c h e c k M u l t i I t e m ! 1 0 / 1 2
R3771
FULL_NIM_BCD
CN_2INPUT_H_ALTO
TU3701-*4
R3770
TDFR-C236D
FULL_NIM_SEMTEK
RF_S/W_CNTL
1
BST_CNTL
2
+B1[+5V]
3
NC[RF_AGC]
4 R3769
NC_1
5
SCLT +5V_Normal
6 FULL_NIM_BCD
SDAT
7
NC_2
8
SIF
9
NC_3
10
VIDEO
11
GND
12
+B2[1.2V]
13
+B3[3.3V]
14
RESET
15
NC_4
16
SCL
17
SDA
18
ERR
19
SYNC
20
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
31
SHIELD
200mA
TUNER_SMALL
+5V_TU
R3755
470 R3758
82
TU_SIF
E
B ISA1530AC1
R3753 Q3705
C
4.7K
DEMOD_RESET
T h i s w a s b e i n g a p p l i e d t o t h e o n l y c h i n a d e m o d ,
s o t h i s h a s t o b e d e l e t e d i n b o t h m a i n a n d I S D B s h e e t .
HALF_NIM_1.2V_BCD
IC3703
R2
AZ1117BH-ADJTRE1 HALF_NIM
R3767
+1.2V/+1.8V_TU
10
INPUT ADJ/GND
3 1
2
HALF_NIM
OUTPUT
IC3703-*1
R3768
AP1117EG-13
1.2K
R1
IN OUT
ADJ/GND
C3740 C3741
0 . 1 u F
16V 10uF
IC3701
HALF_NIM
10V
AP2132MP-2.5TRG1
[ E P ] HALF_NIM
FULL_NIM_BCD +1.2V/+1.8V_TU
a d d , 0 9 2 9
R3748-*1
10K
PG GND
10K
1 8
FULL_NIM_BCD
FULL_NIM_SEMTEK
R3748
10K EN ADJ
2 7
5.1K
R1
VIN VOUT
3 6
10K
VCTRL NC
4 5
R3747
9.1K
1005
R2
IC3701-*1
SC4215ISTRT
Vo=0.8*(1+R1/R2)
NC_1 GND
1 8
FULL_NIM_SEMTEK
EN ADJ
2 7
VIN VO
3 6
NC_2 NC_3
4 5
+5V_General
+5V_TU
+3.3V_TU
S i z e c h a n g e , 0 9 2 9
S i z e c h a n g e , 0 9 2 9
L3702 L3703
MLB-201209-0120P-N2 60mA MLB-201209-0120P-N2
C3722
C3719 C3724
C3723 C3725
0 . 1 u F 22uF
22uF
0 . 1 u F
16V 16V 22uF
10V
10V 16V
l o c a t i o n m o v e m e n t , 0 9 2 9
Add,0929
GP2R 20101023
25
R3703
150
OPT
380mA
R3764
0
1/10W
FULL_NIM
C3730
10uF
10V
FULL_NIM
+3.3V_Normal
C3727
C3715
0 . 1 u F
22uF
16V
10V